The effects are cumulative and concurrent. A successful Will save reduces or eliminates these effects. Creatures affected by multiple effects make only one save and apply the result to all the effects.

Dazed: The creature can take no actions for 1 round, though it defends itself normally. Save negates.

Furthermore, if you are on your home plane when you cast this spell, nonevil extraplanar creatures within the area are instantly banished back to their home planes. Creatures so banished cannot return for at least 24 hours. This effect takes place regardless of whether the creatures hear the blasphemy or not. The banishment effect allows a Will save (at a -4 penalty) to negate.

Mythic Blasphemy

When determining the spell's effect on non-mythic creatures, add your tier to your caster level. Non-evil creatures that fail the save take a –4 penalty on attack rolls and saving throws, and their spell resistance decreases by 5 for as long as the spell's other effects last.